There are many different types of scientific investigations. Which of the following forms requires the identification and control of variables?

Question

A.
laboratory experiments
B.
observational field studies
C.
model-building
D.
collection of specimens

Answer 1

The form that requires the identification and control of variables is:

A. laboratory experiments

Laboratory experiments typically involve manipulating one or more independent variables while controlling others to observe the effect on dependent variables, allowing for a controlled environment to draw conclusions about cause-and-effect relationships.